/*
 * Copyright 2016 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.apiman.manager.api.es.util;

import java.io.IOException;

/**
 * Base class for all query builders.
 * 
 * @author ewittman
 */
public abstract class AbstractQueryBuilder implements QueryBuilder {

    /**
     * @see io.apiman.manager.api.es.util.QueryBuilder#toXContent(io.apiman.manager.api.es.util.XContentBuilder)
     */
    @Override
    public final void toXContent(XContentBuilder builder) throws IOException {
        builder.startObject();
        doXContent(builder);
        builder.endObject();
    }

    protected abstract void doXContent(XContentBuilder builder) throws IOException;

    /**
     * @see io.apiman.manager.api.es.util.QueryBuilder#string()
     */
    @Override
    public String string() throws IOException {
        XContentBuilder builder = XContentFactory.jsonBuilder();
        toXContent(builder);
        builder.close();
        return builder.string();
    }

}
